Last night I was kept awake at 1:30am by an incessant scratching and biting sound coming from my ceiling. At first I thought it might be pounding rain, but it was gnawing in one spot for too long. I then noticed a bright orange light start flickering within my fire alarm. I located the sound, and considered running for the broom to knock on the ceiling and scare it away, instead deciding to let it do whatever. I half expected a possum to fly down onto my belly. Maybe a top secret spy possum who would carve a perfect circle into the ceiling and rappel into my bedroom. Anyway, it sounded huge. I have opted for telling nobody anything (my roommates, landlord) and keeping the creature my own secret.